.Marketing-sales {
  font-family: Arial, sans-serif;
}

.tab-list {
  list-style-type: none;
  padding: 0;
  margin: 0;
  display: flex;
  margin-left: 20px;
}

.tab-item {
  padding: 10px 20px;
  cursor: pointer;
  transition: background-color 0.3s;
  /* 添加默认背景色 */
  color: #707275;
  border-radius: 10px;
  margin: 0px 10px;
}

.tab-item:hover {
  background-color: #e0e0e0; /* 鼠标悬停时的背景色 */
}

.tab-item.active {
  background-color: #ebebeb; /* 激活时的背景色 */
  color: #707275;
}

.tab-content {
  flex: 1;
  margin-top: 5px;
  width: 104%;
  margin-left: -35px;
}
#contentd{
    width: 1000px;
    display: flex;
}
#contentd dl{
    width: 250px;
    height: 400px;
    border-radius: 10px;
    margin: 5px 10px;
    line-height: 40px;
    transition: transform 0.5s ease; /* 添加过渡效果 */
}
#contentd dl dd{
    width: 215px;
    margin-left: 6px;
    font-weight: bold;
}
#contentd dl img{
    width: 100%;
    height: 400px;
    border-radius: 10px;
    /* transition: transform 0.3s ease; 平滑的放大效果 */
}
/* #contentd dl img:hover{
    transform: scale(1.5); 鼠标悬停时放大1.5倍
} */
#lefts{
    width: 30px;
    height: 30px;
    position: absolute;
    background: #fff;
    border-radius: 50%;
    top: 190px;
    text-align: center;
    font-size: 20px;
}
#rights{
    width: 30px;
    height: 30px;
    position: absolute;
    background: #fff;
    border-radius: 50%;
    top: 190px;
    text-align: center;
    font-size: 20px;
    right: -30px;
}